package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author Rui
 * @version 1.0
 * @date 2020/11/10 10:31
 */
@Service
public class PaymentService {

    public String paymentInfoOK(Integer id){
        return "线程池：" + Thread.currentThread().getName() + " paymentInfoOK, id:" + id + "\t" + "O(∩_∩)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfoTimeoutHandle",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfoTimeout(Integer id){
        int timeNumber = 3000;
        try {
            Thread.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + " paymentInfoTimeout, id:" + id + "\t" + "O(∩_∩)O哈哈~ 耗时：" + timeNumber;
    }
    // 服务端服务降级方法：
    public String paymentInfoTimeoutHandle(Integer id){
        return "线程池：" + Thread.currentThread().getName() + " 8001系统繁忙，请稍后再试，id:" + id + "\t" + "o(╥﹏╥)o";
    }

    //====================================== 服务熔断 =======================================
    public String paymentCircuitBreakerFallback(@PathVariable("id") Integer id){
        return "id 不能为负数，请稍后再试，o(╥﹏╥)o";
    }

    @HystrixCommand(fallbackMethod = "paymentCircuitBreakerFallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),   // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),    // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),        // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60")     // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id < 0){
            throw new RuntimeException("*****id 不能为负数！！");
        }
        String s = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号：" + s;
    }
}